小刚有56本书，小丽比小刚多19本，小丽有本．_刷题宝

题干

小刚有56本书，小丽比小刚多19本，小丽有（）本．

A：76

B：65

C：75

D：68

上一题下一题 0.0难度选择题更新时间:2016-09-12 11:56:17

答案(点此获取答案解析）

C

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设方程2^x+x+2=0和方程 ${\log_{2}}^{x} + x + 2 = 0$ 的根分别为p和q，若函数f（x）=（x+p）（x+q）+2，则（　　）

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呼一次气和吸一次气才算一次呼吸。

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A. Does she know your phone number?

B. May I speak to Jennifer, please?

C. Oh, just a moment, please?

D. This is Xiaohai speaking.

E. This is Jennifer speaking.

F. The line is bad.

G. I'm busy these days.

A: Hello!____

B: May I ask who's calling, please?

A:____

B: Hi, Xiaohai. I'm sorry, Jennifer is out at the

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A: Sorry, I can't hear you.____

B: I said if I could take a message for you.

A: Yes, thank you. Could you ask her to call me back this evening?

B:____

A: Yes, she does, but just in case, it's 85286321.

B:____ Jennifer is coming back.

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小刚和小强赛跑情况如图．

（I）____先到达终点．

（II）开赛初____领先，开赛____分后____领先，比赛中两人相距最远约是____米．

（III）小刚的平均速度是____米．（得数保留整数）

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